Sebastien Deletaille

"The 4 billion euro session"

Together with Matthias Geeroms (Lighthouse), Stijn Christiaens (Collibra) & Alessandro Mazzocchetti (Odoo).

Summary

One truth: culture scales what strategy starts.

They’ve built companies worth over a billion euros, but their real secret isn’t strategy, it’s culture.
In this unique panel, four Belgian unicorn founders share how their obsession with culture became the catalyst for scaling faster, leading stronger, and staying grounded while growing beyond imagination.

Forget the textbook playbooks. This is real talk from the people who built billion-euro businesses, and the culture that holds them together.


Biography

Sébastien is a tech entrepreneur in the field of Digital Health. He is the co-founder and CEO of Rosa, a tech non-profit that helps patients find and book medical appointments. With a team of 40, Rosa supports >10 000 health professionals in Belgium across outpatient and hospital care.

Prior to Rosa, Sébastien notably co-founded Riaktr (formerly Real Impact Analytics), one of Belgium's leading scale-ups, active in the field of Telecom Big Data. Riaktr was sold to Seamless Distribution Systems in 2022.

Before his entrepreneurial pursuits, Sébastien started his career at McKinsey & Company and received a Master of Science in Business Engineering from the Solvay Business School at the University of Brussels.

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